RIDGID just dropped the price on the 18V Lithium Ion 4.0 Ah Battery to $46.89, down from $109. That is 57% off a battery that gives you triple the runtime of the standard 1.5 Ah pack, which makes this one of the best RIDGID battery deals to land in a while. This post contains affiliate links, which means I may earn a small commission if you buy through them—at no extra cost to you. It helps keep the tool deals coming, so thanks for your support! Prices valid at time of posting but are subject to change at anytime.

RIDGID 18V Lithium Ion 4.0 Ah Battery on sale at Home Depot for $46.89

👉 Grab the RIDGID 18V 4.0 Ah Battery at Home Depot Here

Final Price Breakdown

Was: $109
Now: $46.89
You Save: $62.11 (57% off)
Deal Ends: 6/14/26

Why This Tool Is Worth It

Runtime is the number one thing that separates a productive day from a frustrating one when you are working off batteries. This 4.0 Ah pack delivers 3 times the runtime of the 1.5 Ah battery, which means fewer swaps, fewer interruptions, and more cuts, drives, and drills between charges.

The compact form factor is the other big win here. You get the extended runtime without the bulk and weight of a larger high capacity pack, which keeps your tools balanced and reduces fatigue during long sessions overhead or in tight spots.

The built in fuel gauge is a small feature that pays off every single day. A quick glance tells you exactly where you stand so you are not caught with a dead battery in the middle of a cut. Add in the Lifetime Service Agreement when you register within 90 days and this becomes a long term investment, not just a one off purchase. 🔋

Features

Compact size reduces user fatigue
Fuel gauge displays power level on the job
3X more runtime compared to the 1.5 Ah Lithium Ion battery (R870015)
100% compatible with all RIDGID 18V batteries, tools, and chargers
Lifetime Service Agreement with registration within 90 days of purchase
Includes: (1) AC87004 18V Lithium Ion 4.0 Ah Battery and operator's manual
RIDGID: Built for a Lifetime

Who This Is Best For

This battery is best for anyone already running the RIDGID 18V platform who needs more runtime without stepping up to a heavy high capacity pack. It belongs in the shop of remodelers, finish carpenters, DIYers, and weekend woodworkers who want a reliable mid range battery for drills, impact drivers, circular saws, and other everyday 18V tools. At under $47 with the Lifetime Service Agreement included, this is also the smartest way to add a backup pack to your charger.

👉 Lock In the RIDGID 18V 4.0 Ah Battery at $46.89 Before It Sells Out

How many RIDGID 18V tools are currently running in your shop? Drop a comment and let everyone know what this battery would be powering first.

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